The whole STEMAT-JANSEN industrial valve range has been built in compliance with highest quality standards and applicable regulations:
– ISO 9001
–  PED 97/23
– ATEX LCIE
– API
– ASTM
– ANSI
Each STEMAT-JANSEN product is manufactured according to the following standards:
– DIN (Germany)
– ASA (US)
– NFE (France)
– GOST (Russia)
– B.S. (UK)